Transaction not yet indexed

21UTCffmc7n5fRFsms9KsnQprchQc3XnEiN5ekjeQ6yTS7w23ETczNYoSVGv5PBeHrA1cLraUa9CrEEoQWqLuNP8

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.